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3 years ago

What is the y-intercept for the graph of 7x – 3y = –5?

Mathematics

2 answers:

posledela3 years ago

6 0

Slope = -4.667/2.000 = -2.333
x-intercept = 5/7 = 0.7
y-intercept = 5/3 = 1.7

AysviL [449]3 years ago

3 0

2 ways to find the y int.

(1) put the equation in y = mx + b form and the y int will be in the b position
7x - 3y = -5
-3y = -7x - 5
y = 7/3x + 5/3....so 5/3 is ur y int

(2) another way is to sub in 0 for x and solve for y
7(0) - 3y = -5
-3y = -5
y = -5/-3
y = 5/3...ur y int

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Step-by-step explanation:

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= - cos60cosx - sin60sinx

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squaring to obtain cos² (120 + x)

= $\frac{1}{4}$ cos²x + $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

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squaring to obtain cos²(120 - x)

= $\frac{1}{4}$ cos²x - $\frac{\sqrt{3} }{2}$ sinxcosx + $\frac{3}{4}$ sin²x

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Putting it all together

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